Dent Art Facemask Blue Petit Multi Adjustable with Head Strap / Accessories 1/pkWearing multi adjustable facemasks are an essential part of orthodontic Class III malocclusion correction treatment. These multi adjustable facemasks are specially designed to achieve Class III compliance in your treatment plan while having maximum patient comfort. Quick and Easy Fit Position bend in vertical bar over nose Center forehead rest on forehead and lock in position Center chin cup on chin and lock in position Place crossbar approximately 2.